Merge /conditions into the app as a Station tab

- New Station tab (top tabs, bottom nav, swipe order) carrying the old /conditions look:
  radar-ring hero, condition pill, wind compass, atmosphere/precip/solar cards, indoor
- Scoped sl-* styles and station-live.js; units follow the app's metric/imperial setting
- Empty/error states when no station is connected
- /conditions now 301-redirects to /?tab=station; removed conditions.html,
  /api/conditions/public and the old My Station drawer
- /api/ambient-config also returns the station name
- Dashboard and settings links updated; SW cache v8; manifest shortcut for Station
- Drops an indoor-temp block in applyStationOverlay that referenced an out-of-scope helper

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

app/public/dashboard-settings.html

@@ -136,7 +136,7 @@ button.primary:disabled { opacity: 0.5; cursor: not-allowed; }
   <div class="section">
     <div class="section-hdr">Station Display</div>
     <div>
-      <label>Station Name (shown on public conditions page)</label>
+      <label>Station Name (shown on the Station tab of the weather app)</label>
       <input id="inputStationName" type="text" placeholder="e.g. Genesis 8:22" maxlength="60" autocomplete="off">
     </div>
     <div class="settings-actions">